高中英语倍数表达法课件（16张PPT）

(共16张PPT)
英语倍数表达法
一、用
times
表示倍数
1.
“A
+
be
+
倍数
+
as
+
计量形容词原级
+
as
+
B”。
This
tree
is
three
times
as
tall
as
that
one.
这棵树是那棵树的三倍高。
His
father
is
twice
as
old
as
he.
他父亲的年纪有他两倍大。
2.
“A
+
be
+
倍数
+
计量形容词比较级
+
than
+
B
”
The
Yangtze
River
is
almost
twice
longer
than
the
Pearl
River.
长江差不多比珠江长两倍。
The
dictionary
is
exactly
five
times
more
expensive
than
that
one.
这本字典比那本恰好贵5倍。
3.“A
+
be
+
倍数
+
the
+
计量名词
+
of
+
B
”
The
newly
broadened
square
is
four
times
the
size
of
the
previous
one.
新扩建的广场是未扩建时的四倍大。
This?hill?is?four?times?the?height?of?that?
small?one
这座山的高度是那座小山的四倍。（比那座小山高三倍）
4.“The
+
计量名词
+
of
+
A
+
be
+
倍数
+
that
+
of
+
B
”
The
size
of
the
newly
broadened
square
is
four
times
that
of
the
previous
one.
　　新扩建的广场为以前的四倍大。
The?height?of?this?hill?is?four?times?that?of?that?small?one．
5.
“…
times
+as
many
（或
much
）＋名词＋
as
…”例如：
We've
produced
twice
as
much
cotton
this
year
as
（
we
did
）
ten
years
ago.
今年我们生产的棉花比十年前多了一倍。（汉语中的多一倍实际上也指两倍一样多。）
He
has
got
three
times
as
many
books
as
his
sister.
他拥有的书的数量是他妹妹的
3
倍。
6.
“…
times
+
what
从句”
例如：
The
length
of
the
road
is
four
times
what
it
was
three
years
ago.
这条路的长度是三年前的
4
倍。
The
price
of
the
meat
is
twice
what
it
was
last
year.
肉价是去年的两倍。
7.?
“…
times
+
up
on
（或
over
）…”
例如：
The
size
of
the
sun
is
a
million
times
over
that
of
the
earth.
太阳的体积比地球的体积大一百万倍。
He
is
three
times
up
on
your
age.
他的年龄是你的
4
倍（或：比你的年龄大
3
倍）。
8.
“…
+by
+
…
times
”
例如：
Compared
with
last
year，
our
coal
output
has
increased
by
three
times.
与去年相比，我们的煤产量增长了
3
倍。
His
speed
is
faster
than
mine
by
four
times.
他的速度比我的快
4
倍。
Compared
with
last
year,
our
coal
output
has
increased
by
three
times.
二、用分数、百分数表示倍数
The
box
is
one-third
bigger
than
that
one.
这个盒子比那个盒子大三分之一。
Last
year
the
output
value
of
industry
was
59
percent
higher
than
that
of
1976.
去年工业产值比
1976
年增长了
59
％。
My
command
of
English
is
not
half
so
good
as
yours.
我英语掌握得还不及你的一半儿好。
三、用
again
（一倍），
double
（两倍），
triple
（三倍），
fourfold
（四倍）等词表示倍数。
My
Aunt
is
as
old
again
as
I
am.
我姑姑的年龄比我大一倍。
The
top-brand
clothes
are
often
sold
as
double
the
normal
price
here.
这里名牌衣服的售价经常比正常的售价高一倍。
The
new
work
procedure
tripled
the
output.
新工艺使产量增加两倍。
The
output
of
grain
increased
fourfold.
粮食产量增加了三倍。
exercises
1.
Americans
eat
________
vegetable
per
person
today
as
they
did
in
1910.
A.
more
than
twice
B.
as
twice
as
many
C.
twice
as
many
as
D.
twice
as
much
D
2.
Paper
produced
every
year
is
_______
the
world's
production
of
vehicles.
A.
the
three
weight
of
B.
three
times
the
weight
of
C.
as
three
times
heavy
as
D.
three
times
as
heavier
as
B
3.With
the
help
of
the
German
experts，
the
factory
produced
______
cars
in
1993
as
the
year
before.
A.
as
twice
many
B.
as
many
twice
C.
twice
as
many
D.
twice
many
as
C
4.
This
ship
measures
________
that
one.
A.
as
twice
as
long
B.
as
twice
long
as
C.
twice
long
as
D.
twice
as
long
as
D
5.
After
the
new
technique
was
introduced，
the
factory
produced
_______
tractors
in
1988
as
the
year
before.
A.
as
twice
many
B.
as
many
as
C.
as
twice
as
many
D.
twice
as
many
D